Résultats de recherche
7 janv. 2023 · Key Takeaways. River otters have several predators, including alligators, bobcats, coyotes, and large birds of prey. Otters have developed various adaptations to avoid predation, such as their excellent swimming and diving abilities, as well as their ability to camouflage in their surroundings.
North American river otters, like most predators, prey upon the most readily accessible species. Fish is a favored food among the otters, but they also consume various amphibians (such as salamanders and frogs), freshwater clams, mussels, snails, small turtles and crayfish. The most common fish consumed are perch, suckers, and catfish.
Otters, being semi-aquatic mammals, face predation risks from both marine predators and river predators. These predators play a significant role in shaping otter populations and maintaining ecosystem balance.
River otter dens are along the water in abandoned burrows or empty hollows. The dens have entrances underwater so they can be easily accessed from the water. Bobcats, alligators, coyotes, raptors, and other large predators will sometimes prey on North American river otters.
Status: River Otters are not endangered. Since they are predators at the top of the food chain they are sensitive to water pollution. Within North America their range has been reduced however they are still found in most parts of the Ottawa River watershed.
18 sept. 2023 · River otters are able to hold their breath underwater for up to eight minutes. What is NCC doing to protect habitat for this species? River otter populations declined significantly throughout the late 1800s due to over-harvesting and water pollution.
predators: big cats, alligators, coyotes, dogs, wolves. threats: pollution, poaching, habitat loss, accidental trapping, road kill. size: 100-153 cm (body 66-107 cm; tail 31-46 cm) weight: 8-11 kg. The North American river otter is a large otter whose story is a success.
